Emkhakheni wokwenziwa kwe-prototype, izinto zensimbi zidlala indima ebalulekile ekwakheni ama-prototypes ahlala isikhathi eside futhi anembayo. Izinsimbi ezifana ne-aluminium, insimbi, ne-titanium ngokuvamile zikhethwa ngenxa yamandla azo akhethekile, ukuqina, nekhono lokumelana nokuhlolwa okunzima.